Analysis of the most affected countries in South America

Cross-country comparison over absolute dates

Confirmed

Dead

Daily Dead (7-Day Average)

Active

Cross-country comparison with approximately aligned start days

Confirmed

Dead

Daily Dead (7-Day Average)

Active

Per-country analysis with exponential and sigmoidal projections, and new cases analysis

IMPORTANT: The projections are only accurate if the fit is good (it often isn't), and assuming nothing changes going forward. The sigmoid is omitted if a reasonable fit can't be computed, but this still doesn't mean that the fit is good if it is shown.

The dashed lines show best fit projections from a few previous days for comparison.

Ecuador

Population $17,643,054$

Confirmed

Start date 2020-03-14 (1st day with 1 confirmed per million)

Latest number $30,502$ on 2020-05-14

Best fit exponential: \(2.02 \times 10^{3} \times 10^{0.021t}\) (doubling rate \(14.5\) days)
Best fit sigmoid: \(\dfrac{33,653.6}{1 + 10^{-0.063 (t - 40.8)}}\) (asimptote \(33,653.6\))

Dead

Start date 2020-03-14 (1st day with 0.1 dead per million)

Latest number $2,338$ on 2020-05-14

Best fit exponential: \(38.7 \times 10^{0.029t}\) (doubling rate \(10.2\) days)
Best fit sigmoid: \(\dfrac{5,536.2}{1 + 10^{-0.038 (t - 64.5)}}\) (asimptote \(5,536.2\))

Active

Start date 2020-03-14 (1st day with 1 active per million)

Latest number $24,731$ on 2020-05-14

Peru

Population $32,971,854$

Confirmed

Start date 2020-03-14 (1st day with 1 confirmed per million)

Latest number $80,604$ on 2020-05-14

Best fit exponential: \(1.29 \times 10^{3} \times 10^{0.030t}\) (doubling rate \(10.2\) days)
Best fit sigmoid: \(\dfrac{116,586.0}{1 + 10^{-0.047 (t - 55.1)}}\) (asimptote \(116,586.0\))

Dead

Start date 2020-03-21 (1st day with 0.1 dead per million)

Latest number $2,267$ on 2020-05-14

Best fit exponential: \(54 \times 10^{0.030t}\) (doubling rate \(10.0\) days)
Best fit sigmoid: \(\dfrac{3,235.9}{1 + 10^{-0.049 (t - 47.9)}}\) (asimptote \(3,235.9\))

Active

Start date 2020-03-14 (1st day with 1 active per million)

Latest number $53,186$ on 2020-05-14

Brazil

Population $212,559,417$

Confirmed

Start date 2020-03-17 (1st day with 1 confirmed per million)

Latest number $203,165$ on 2020-05-14

Best fit exponential: \(3.78 \times 10^{3} \times 10^{0.030t}\) (doubling rate \(10.2\) days)
Best fit sigmoid: \(\dfrac{482,146.3}{1 + 10^{-0.037 (t - 62.9)}}\) (asimptote \(482,146.3\))

Dead

Start date 2020-03-22 (1st day with 0.1 dead per million)

Latest number $13,999$ on 2020-05-14

Best fit exponential: \(320 \times 10^{0.031t}\) (doubling rate \(9.8\) days)
Best fit sigmoid: \(\dfrac{27,034.9}{1 + 10^{-0.042 (t - 53.6)}}\) (asimptote \(27,034.9\))

Active

Start date 2020-03-17 (1st day with 1 active per million)

Latest number $109,687$ on 2020-05-14

Chile

Population $19,116,201$

Confirmed

Start date 2020-03-11 (1st day with 1 confirmed per million)

Latest number $37,040$ on 2020-05-14

Best fit exponential: \(1 \times 10^{3} \times 10^{0.024t}\) (doubling rate \(12.6\) days)
Best fit sigmoid: \(\dfrac{263,503.5}{1 + 10^{-0.026 (t - 96.5)}}\) (asimptote \(263,503.5\))

Dead

Start date 2020-03-23 (1st day with 0.1 dead per million)

Latest number $368$ on 2020-05-14

Best fit exponential: \(29.6 \times 10^{0.021t}\) (doubling rate \(14.1\) days)
Best fit sigmoid: \(\dfrac{398.3}{1 + 10^{-0.045 (t - 35.7)}}\) (asimptote \(398.3\))

Active

Start date 2020-03-11 (1st day with 1 active per million)

Latest number $21,017$ on 2020-05-14

Bolivia

Population $11,673,021$

Confirmed

Start date 2020-03-18 (1st day with 1 confirmed per million)

Latest number $3,372$ on 2020-05-14

Best fit exponential: \(45 \times 10^{0.033t}\) (doubling rate \(9.3\) days)
Best fit sigmoid: \(\dfrac{15,509.6}{1 + 10^{-0.036 (t - 73.3)}}\) (asimptote \(15,509.6\))

Dead

Start date 2020-03-30 (1st day with 0.1 dead per million)

Latest number $152$ on 2020-05-14

Best fit exponential: \(8.7 \times 10^{0.027t}\) (doubling rate \(11.2\) days)
Best fit sigmoid: \(\dfrac{1,577.8}{1 + 10^{-0.028 (t - 80.7)}}\) (asimptote \(1,577.8\))

Active

Start date 2020-03-18 (1st day with 1 active per million)

Latest number $2,864$ on 2020-05-14

Colombia

Population $50,882,891$

Confirmed

Start date 2020-03-16 (1st day with 1 confirmed per million)

Latest number $13,610$ on 2020-05-14

Best fit exponential: \(528 \times 10^{0.024t}\) (doubling rate \(12.7\) days)
Best fit sigmoid: \(\dfrac{38,985.7}{1 + 10^{-0.028 (t - 70.1)}}\) (asimptote \(38,985.7\))

Dead

Start date 2020-03-26 (1st day with 0.1 dead per million)

Latest number $525$ on 2020-05-14

Best fit exponential: \(41.8 \times 10^{0.023t}\) (doubling rate \(13.2\) days)
Best fit sigmoid: \(\dfrac{692.4}{1 + 10^{-0.040 (t - 38.5)}}\) (asimptote \(692.4\))

Active

Start date 2020-03-16 (1st day with 1 active per million)

Latest number $9,727$ on 2020-05-14

Argentina

Population $45,195,774$

Confirmed

Start date 2020-03-16 (1st day with 1 confirmed per million)

Latest number $7,134$ on 2020-05-14

Best fit exponential: \(605 \times 10^{0.018t}\) (doubling rate \(16.6\) days)
Best fit sigmoid: \(\dfrac{9,475.9}{1 + 10^{-0.030 (t - 47.6)}}\) (asimptote \(9,475.9\))

Dead

Start date 2020-03-24 (1st day with 0.1 dead per million)

Latest number $353$ on 2020-05-14

Best fit exponential: \(36.6 \times 10^{0.020t}\) (doubling rate \(15.4\) days)
Best fit sigmoid: \(\dfrac{413.8}{1 + 10^{-0.038 (t - 35.9)}}\) (asimptote \(413.8\))

Active

Start date 2020-03-16 (1st day with 1 active per million)

Latest number $4,396$ on 2020-05-14

Uruguay

Population $3,473,730$

Confirmed

Start date 2020-03-13 (1st day with 1 confirmed per million)

Latest number $724$ on 2020-05-14

Best fit exponential: \(196 \times 10^{0.010t}\) (doubling rate \(30.0\) days)
Best fit sigmoid: \(\dfrac{688.8}{1 + 10^{-0.043 (t - 21.9)}}\) (asimptote \(688.8\))

Dead

Start date 2020-03-28 (1st day with 0.1 dead per million)

Latest number $19$ on 2020-05-14

Best fit exponential: \(4.46 \times 10^{0.015t}\) (doubling rate \(20.7\) days)
Best fit sigmoid: \(\dfrac{20.7}{1 + 10^{-0.043 (t - 22.2)}}\) (asimptote \(20.7\))

Active

Start date 2020-03-13 (1st day with 1 active per million)

Latest number $158$ on 2020-05-14

Recovering countries that had over 300 active cases at peak

List of all recovering countries (the top 4 not covered above are also analyzed below)